Geographic Information Systems Data Sources

The links below connect to publicly-available data sets

Stony Brook University Resources

Stony Brook University Academic Commons

The Academic Commons at Stony Brook University, hosted by the Stony Brook Library, contains GIS research data files used by faculty in publications and projects.

Other Spatial Data Resources

ESRI Maps and Data

The Esri Maps and Data group provides access to online basemap and reference map services, map layers and documents, and tools to use in your GIS work.

David Rumsey Historical Map Collection

The collection focuses on rare 18th and 19th century North American and South American maps and other cartographic materials. Historic maps of the World,Europe,Asia, and Africa are also represented.

EarthExplorer

USGS repository for remotely sensed data. Free login will allow access to higher resolution data.

EROS Data Center

Earth Resources Observation and Science Center. Providing science and imagery to better understand our Earth; including U.S. topographic data and international DEMs.

GeoCommons Finder!

Visualize data from numerous sources to identify trends that were before unseen. Map your data with real-time social data and the over 50,000 open-source data sets in GeoCommons.

Data.gov (geospatial)

Data.gov has integrated the Geospatial One-Stop (GOS) portal and catalog, and added some exciting improvements to both the user interface as well as the underlying infrastructure.

Tufts Geospatial Data Repository

Site allows you to search, discover, preview, interact with the map, and retrieve geospatial data from university repositories.

As one of the cornerstones of the U.S. Geological Survey's (USGS) National Geospatial Program, The National Map is a collaborative effort among the USGS and other Federal, State, and local partners to improve and deliver topographic information for the Nation.